Patents by Inventor Tzu-Ching Chu

Tzu-Ching Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Roller with single piece carriage and open front hook
    Publication number: 20070146311
    Abstract: A roller apparatus for a computer input device, such as a mouse, that has a sturdier support than prior art supports. A scrolling wheel carriage is supported by a PCB for greater stability. An open hook support for the hinge of a wheel carriage angles outward below a retaining point for the hinge. This combines with the hinge being hollowed out, so that upward forces due to variations in PCB thickness cause the hinge to compress while retained by the hook support. The design also provides long side arms for activating microswitches for lateral scrolling, and stoppers for preventing forward and backward slippage.
    Type: Application
    Filed: December 22, 2005
    Publication date: June 28, 2007
    Applicant: Logitech Europe S.A.
    Inventors: Feng-Hao Lin, Chi-ming Wang, Tzu-Ching Chu, Tsung Hsin Hsieh
  • Computer mouse
    Patent number: D563411
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: March 4, 2008
    Assignee: Logitech Europe S.A.
    Inventors: Feng-Hao Lin, Tzu-Ching Chu, Chi-Ming Wang, Tsung Hsin Hsieh, Yun-Chan Tsai, Chung-Shan Yang, Kuo Hao Bao